Method futuresCandlesticksStream

src/node-binance-api.ts:5869–5883

* Websocket futures candlesticks * @param {array/string} symbols - an array or string of symbols to query * @param {string} interval - the time interval * @param {function} callback - callback function * @return {string} the websocket endpoint

(symbols: string[] | string, interval: Interval, callback: Callback)

     * @return {string} the websocket endpoint
     */
    futuresCandlesticksStream(symbols: string[] | string, interval: Interval, callback: Callback) {
        const reconnect = () => {
            if (this.Options.reconnect) this.futuresCandlesticksStream(symbols, interval, callback);
        };
        let subscription;
        if (Array.isArray(symbols)) {
            if (!this.isArrayUnique(symbols)) throw Error('futuresCandlesticks: "symbols" array cannot contain duplicate elements.');
            const streams = symbols.map(symbol => symbol.toLowerCase() + '@kline_' + interval);
            subscription = this.futuresSubscribe(streams, callback, { reconnect });
        } else {
            const symbol = symbols.toLowerCase();
            subscription = this.futuresSubscribeSingle(symbol + '@kline_' + interval, callback, { reconnect });
        }
        return (subscription as any).url;
    }

    // Delivery WebSocket Functions:
    /**